Nguyễn Thái Ngọc Duy | f5d942e | 2012-10-26 22:53:53 +0700 | [diff] [blame] | 1 | #include "builtin.h" |
| 2 | #include "commit.h" |
| 3 | #include "refs.h" |
| 4 | #include "pkt-line.h" |
| 5 | #include "sideband.h" |
| 6 | #include "run-command.h" |
| 7 | #include "remote.h" |
| 8 | #include "send-pack.h" |
| 9 | #include "quote.h" |
| 10 | #include "transport.h" |
| 11 | #include "version.h" |
| 12 | |
| 13 | static int feed_object(const unsigned char *sha1, int fd, int negative) |
| 14 | { |
| 15 | char buf[42]; |
| 16 | |
| 17 | if (negative && !has_sha1_file(sha1)) |
| 18 | return 1; |
| 19 | |
| 20 | memcpy(buf + negative, sha1_to_hex(sha1), 40); |
| 21 | if (negative) |
| 22 | buf[0] = '^'; |
| 23 | buf[40 + negative] = '\n'; |
| 24 | return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs"); |
| 25 | } |
| 26 | |
| 27 | /* |
| 28 | * Make a pack stream and spit it out into file descriptor fd |
| 29 | */ |
| 30 | static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args) |
| 31 | { |
| 32 | /* |
| 33 | * The child becomes pack-objects --revs; we feed |
| 34 | * the revision parameters to it via its stdin and |
| 35 | * let its stdout go back to the other end. |
| 36 | */ |
| 37 | const char *argv[] = { |
| 38 | "pack-objects", |
| 39 | "--all-progress-implied", |
| 40 | "--revs", |
| 41 | "--stdout", |
| 42 | NULL, |
| 43 | NULL, |
| 44 | NULL, |
| 45 | NULL, |
| 46 | NULL, |
| 47 | }; |
| 48 | struct child_process po; |
| 49 | int i; |
| 50 | |
| 51 | i = 4; |
| 52 | if (args->use_thin_pack) |
| 53 | argv[i++] = "--thin"; |
| 54 | if (args->use_ofs_delta) |
| 55 | argv[i++] = "--delta-base-offset"; |
| 56 | if (args->quiet || !args->progress) |
| 57 | argv[i++] = "-q"; |
| 58 | if (args->progress) |
| 59 | argv[i++] = "--progress"; |
| 60 | memset(&po, 0, sizeof(po)); |
| 61 | po.argv = argv; |
| 62 | po.in = -1; |
| 63 | po.out = args->stateless_rpc ? -1 : fd; |
| 64 | po.git_cmd = 1; |
| 65 | if (start_command(&po)) |
| 66 | die_errno("git pack-objects failed"); |
| 67 | |
| 68 | /* |
| 69 | * We feed the pack-objects we just spawned with revision |
| 70 | * parameters by writing to the pipe. |
| 71 | */ |
| 72 | for (i = 0; i < extra->nr; i++) |
| 73 | if (!feed_object(extra->array[i], po.in, 1)) |
| 74 | break; |
| 75 | |
| 76 | while (refs) { |
| 77 | if (!is_null_sha1(refs->old_sha1) && |
| 78 | !feed_object(refs->old_sha1, po.in, 1)) |
| 79 | break; |
| 80 | if (!is_null_sha1(refs->new_sha1) && |
| 81 | !feed_object(refs->new_sha1, po.in, 0)) |
| 82 | break; |
| 83 | refs = refs->next; |
| 84 | } |
| 85 | |
| 86 | close(po.in); |
| 87 | |
| 88 | if (args->stateless_rpc) { |
| 89 | char *buf = xmalloc(LARGE_PACKET_MAX); |
| 90 | while (1) { |
| 91 | ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX); |
| 92 | if (n <= 0) |
| 93 | break; |
| 94 | send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX); |
| 95 | } |
| 96 | free(buf); |
| 97 | close(po.out); |
| 98 | po.out = -1; |
| 99 | } |
| 100 | |
| 101 | if (finish_command(&po)) |
| 102 | return -1; |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | static int receive_status(int in, struct ref *refs) |
| 107 | { |
| 108 | struct ref *hint; |
| 109 | char line[1000]; |
| 110 | int ret = 0; |
| 111 | int len = packet_read_line(in, line, sizeof(line)); |
| 112 | if (len < 10 || memcmp(line, "unpack ", 7)) |
| 113 | return error("did not receive remote status"); |
| 114 | if (memcmp(line, "unpack ok\n", 10)) { |
| 115 | char *p = line + strlen(line) - 1; |
| 116 | if (*p == '\n') |
| 117 | *p = '\0'; |
| 118 | error("unpack failed: %s", line + 7); |
| 119 | ret = -1; |
| 120 | } |
| 121 | hint = NULL; |
| 122 | while (1) { |
| 123 | char *refname; |
| 124 | char *msg; |
| 125 | len = packet_read_line(in, line, sizeof(line)); |
| 126 | if (!len) |
| 127 | break; |
| 128 | if (len < 3 || |
| 129 | (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) { |
| 130 | fprintf(stderr, "protocol error: %s\n", line); |
| 131 | ret = -1; |
| 132 | break; |
| 133 | } |
| 134 | |
| 135 | line[strlen(line)-1] = '\0'; |
| 136 | refname = line + 3; |
| 137 | msg = strchr(refname, ' '); |
| 138 | if (msg) |
| 139 | *msg++ = '\0'; |
| 140 | |
| 141 | /* first try searching at our hint, falling back to all refs */ |
| 142 | if (hint) |
| 143 | hint = find_ref_by_name(hint, refname); |
| 144 | if (!hint) |
| 145 | hint = find_ref_by_name(refs, refname); |
| 146 | if (!hint) { |
| 147 | warning("remote reported status on unknown ref: %s", |
| 148 | refname); |
| 149 | continue; |
| 150 | } |
| 151 | if (hint->status != REF_STATUS_EXPECTING_REPORT) { |
| 152 | warning("remote reported status on unexpected ref: %s", |
| 153 | refname); |
| 154 | continue; |
| 155 | } |
| 156 | |
| 157 | if (line[0] == 'o' && line[1] == 'k') |
| 158 | hint->status = REF_STATUS_OK; |
| 159 | else { |
| 160 | hint->status = REF_STATUS_REMOTE_REJECT; |
| 161 | ret = -1; |
| 162 | } |
| 163 | if (msg) |
| 164 | hint->remote_status = xstrdup(msg); |
| 165 | /* start our next search from the next ref */ |
| 166 | hint = hint->next; |
| 167 | } |
| 168 | return ret; |
| 169 | } |
| 170 | |
| 171 | static int sideband_demux(int in, int out, void *data) |
| 172 | { |
| 173 | int *fd = data, ret; |
| 174 | #ifdef NO_PTHREADS |
| 175 | close(fd[1]); |
| 176 | #endif |
| 177 | ret = recv_sideband("send-pack", fd[0], out); |
| 178 | close(out); |
| 179 | return ret; |
| 180 | } |
| 181 | |
| 182 | int send_pack(struct send_pack_args *args, |
| 183 | int fd[], struct child_process *conn, |
| 184 | struct ref *remote_refs, |
| 185 | struct extra_have_objects *extra_have) |
| 186 | { |
| 187 | int in = fd[0]; |
| 188 | int out = fd[1]; |
| 189 | struct strbuf req_buf = STRBUF_INIT; |
| 190 | struct ref *ref; |
| 191 | int new_refs; |
| 192 | int allow_deleting_refs = 0; |
| 193 | int status_report = 0; |
| 194 | int use_sideband = 0; |
| 195 | int quiet_supported = 0; |
| 196 | int agent_supported = 0; |
| 197 | unsigned cmds_sent = 0; |
| 198 | int ret; |
| 199 | struct async demux; |
| 200 | |
| 201 | /* Does the other end support the reporting? */ |
| 202 | if (server_supports("report-status")) |
| 203 | status_report = 1; |
| 204 | if (server_supports("delete-refs")) |
| 205 | allow_deleting_refs = 1; |
| 206 | if (server_supports("ofs-delta")) |
| 207 | args->use_ofs_delta = 1; |
| 208 | if (server_supports("side-band-64k")) |
| 209 | use_sideband = 1; |
| 210 | if (server_supports("quiet")) |
| 211 | quiet_supported = 1; |
| 212 | if (server_supports("agent")) |
| 213 | agent_supported = 1; |
| 214 | |
| 215 | if (!remote_refs) { |
| 216 | fprintf(stderr, "No refs in common and none specified; doing nothing.\n" |
| 217 | "Perhaps you should specify a branch such as 'master'.\n"); |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Finally, tell the other end! |
| 223 | */ |
| 224 | new_refs = 0; |
| 225 | for (ref = remote_refs; ref; ref = ref->next) { |
| 226 | if (!ref->peer_ref && !args->send_mirror) |
| 227 | continue; |
| 228 | |
| 229 | /* Check for statuses set by set_ref_status_for_push() */ |
| 230 | switch (ref->status) { |
| 231 | case REF_STATUS_REJECT_NONFASTFORWARD: |
Chris Rorvick | dbfeddb | 2012-11-29 19:41:37 -0600 | [diff] [blame] | 232 | case REF_STATUS_REJECT_ALREADY_EXISTS: |
Junio C Hamano | 75e5c0d | 2013-01-23 13:55:30 -0800 | [diff] [blame] | 233 | case REF_STATUS_REJECT_FETCH_FIRST: |
| 234 | case REF_STATUS_REJECT_NEEDS_FORCE: |
Nguyễn Thái Ngọc Duy | f5d942e | 2012-10-26 22:53:53 +0700 | [diff] [blame] | 235 | case REF_STATUS_UPTODATE: |
| 236 | continue; |
| 237 | default: |
| 238 | ; /* do nothing */ |
| 239 | } |
| 240 | |
| 241 | if (ref->deletion && !allow_deleting_refs) { |
| 242 | ref->status = REF_STATUS_REJECT_NODELETE; |
| 243 | continue; |
| 244 | } |
| 245 | |
| 246 | if (!ref->deletion) |
| 247 | new_refs++; |
| 248 | |
| 249 | if (args->dry_run) { |
| 250 | ref->status = REF_STATUS_OK; |
| 251 | } else { |
| 252 | char *old_hex = sha1_to_hex(ref->old_sha1); |
| 253 | char *new_hex = sha1_to_hex(ref->new_sha1); |
| 254 | int quiet = quiet_supported && (args->quiet || !args->progress); |
| 255 | |
| 256 | if (!cmds_sent && (status_report || use_sideband || |
| 257 | quiet || agent_supported)) { |
| 258 | packet_buf_write(&req_buf, |
| 259 | "%s %s %s%c%s%s%s%s%s", |
| 260 | old_hex, new_hex, ref->name, 0, |
| 261 | status_report ? " report-status" : "", |
| 262 | use_sideband ? " side-band-64k" : "", |
| 263 | quiet ? " quiet" : "", |
| 264 | agent_supported ? " agent=" : "", |
| 265 | agent_supported ? git_user_agent_sanitized() : "" |
| 266 | ); |
| 267 | } |
| 268 | else |
| 269 | packet_buf_write(&req_buf, "%s %s %s", |
| 270 | old_hex, new_hex, ref->name); |
| 271 | ref->status = status_report ? |
| 272 | REF_STATUS_EXPECTING_REPORT : |
| 273 | REF_STATUS_OK; |
| 274 | cmds_sent++; |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | if (args->stateless_rpc) { |
| 279 | if (!args->dry_run && cmds_sent) { |
| 280 | packet_buf_flush(&req_buf); |
| 281 | send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX); |
| 282 | } |
| 283 | } else { |
| 284 | safe_write(out, req_buf.buf, req_buf.len); |
| 285 | packet_flush(out); |
| 286 | } |
| 287 | strbuf_release(&req_buf); |
| 288 | |
| 289 | if (use_sideband && cmds_sent) { |
| 290 | memset(&demux, 0, sizeof(demux)); |
| 291 | demux.proc = sideband_demux; |
| 292 | demux.data = fd; |
| 293 | demux.out = -1; |
| 294 | if (start_async(&demux)) |
| 295 | die("send-pack: unable to fork off sideband demultiplexer"); |
| 296 | in = demux.out; |
| 297 | } |
| 298 | |
| 299 | if (new_refs && cmds_sent) { |
| 300 | if (pack_objects(out, remote_refs, extra_have, args) < 0) { |
| 301 | for (ref = remote_refs; ref; ref = ref->next) |
| 302 | ref->status = REF_STATUS_NONE; |
| 303 | if (args->stateless_rpc) |
| 304 | close(out); |
| 305 | if (git_connection_is_socket(conn)) |
| 306 | shutdown(fd[0], SHUT_WR); |
| 307 | if (use_sideband) |
| 308 | finish_async(&demux); |
| 309 | return -1; |
| 310 | } |
| 311 | } |
| 312 | if (args->stateless_rpc && cmds_sent) |
| 313 | packet_flush(out); |
| 314 | |
| 315 | if (status_report && cmds_sent) |
| 316 | ret = receive_status(in, remote_refs); |
| 317 | else |
| 318 | ret = 0; |
| 319 | if (args->stateless_rpc) |
| 320 | packet_flush(out); |
| 321 | |
| 322 | if (use_sideband && cmds_sent) { |
| 323 | if (finish_async(&demux)) { |
| 324 | error("error in sideband demultiplexer"); |
| 325 | ret = -1; |
| 326 | } |
| 327 | close(demux.out); |
| 328 | } |
| 329 | |
| 330 | if (ret < 0) |
| 331 | return ret; |
| 332 | |
| 333 | if (args->porcelain) |
| 334 | return 0; |
| 335 | |
| 336 | for (ref = remote_refs; ref; ref = ref->next) { |
| 337 | switch (ref->status) { |
| 338 | case REF_STATUS_NONE: |
| 339 | case REF_STATUS_UPTODATE: |
| 340 | case REF_STATUS_OK: |
| 341 | break; |
| 342 | default: |
| 343 | return -1; |
| 344 | } |
| 345 | } |
| 346 | return 0; |
| 347 | } |